A sequence is shown below. –1.5, –1.25, –1, –0.75, . . . Which explicit expression can be used to determine the value of the nth number in the sequence?
a. an = 0.25n – 1.75
b. an= n + 0.25
c. an= n – 2.5
d. an = –1.5n

here is your mark brainliest

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

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step-by-step explanation:

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